Washington (CNN) – Rick Santorum is making another primary state pilgrimage, this time involving himself in a high-profile Republican runoff election in South Carolina.

Santorum, a once and possibly future Republican presidential candidate, will appear in South Carolina on Monday to endorse Henry McMaster in his runoff campaign for lieutenant governor. McMaster, a former Attorney General, is facing off against businessman Mike Campbell, the son of the late former Gov. Carroll Campbell. The election is next Tuesday.

(CNN) – Traveling to the first caucus state of 2016, where presidential candidates will meet a much-anticipated test, three potential Republican candidates took the stage Saturday at the Iowa GOP state convention to tout conservative principles and a new GOP message.

Sen. Rand Paul, R-Kentucky, declared that if the GOP sticks to conservative principles, it will “be the dominant party again.”FULL POST

The former senator from Pennsylvania and 2012 Republican presidential candidate – who's seriously considering another bid for the White House – Wednesday will endorse Sam Clovis. The conservative talk radio host backed Santorum's 2012 presidential campaign, which was fueled by a delayed victory over eventual GOP nominee Mitt Romney in the Iowa caucuses.

(CNN) – As he considers another run for the White House, Rick Santorum is reaching out to working-class voters, bucking the GOP on the minimum wage and touting his new book in hopes of rebranding the Republican Party.

(CNN) – Rick Santorum said Monday he doubts a Libertarian-leaning candidate, like Rand Paul, could be nominated to lead the Republican Party in a presidential election.

Asked by co-host Van Jones on CNN's "Crossfire" if he could support the Kentucky senator if he winds up running and is nominated in 2016, Santorum said he doesn't think he’ll have to consider that ultimately.

(CNN) - Fresh off a speech to the National Rifle Association's annual meeting, former - and potentially future - GOP presidential candidate Rick Santorum praised a controversial new gun law in Georgia.

The bill, signed by Gov. Nathan Deal last week, will allow Georgians to carry guns into some bars, churches and government buildings.

(CNN) - As he seriously considers a second bid for the White House, Rick Santorum will spend three days next week in South Carolina, the state that holds the first southern contest in the presidential primary and caucus calendar.

CNN has learned that the 2012 GOP presidential candidate and former senator from Pennsylvania will be in the Palmetto State from April 13-15 for fundraising events and meetings with Republicans.

(CNN) - In his strongest language to date, possible 2016 Republican presidential contender Rick Santorum said he's "very open to taking on another run" for the White House.

In a taping Wednesday on the Iowa Public Television program "Iowa Press," Santorum was asked about his visit to the Hawkeye State, which holds the first contest in the presidential caucus and primary calendar, and whether the "door's open" to another bid for the GOP nomination.